| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.tika.parser.microsoft; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.StringReader; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.poi.hssf.extractor.OldExcelExtractor; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| |
| import org.apache.tika.exception.TikaException; |
| import org.apache.tika.metadata.Metadata; |
| import org.apache.tika.mime.MediaType; |
| import org.apache.tika.parser.AbstractParser; |
| import org.apache.tika.parser.ParseContext; |
| import org.apache.tika.sax.XHTMLContentHandler; |
| |
| /** |
| * A POI-powered Tika Parser for very old versions of Excel, from |
| * pre-OLE2 days, such as Excel 4. |
| */ |
| public class OldExcelParser extends AbstractParser { |
| private static final long serialVersionUID = 4611820730372823452L; |
| |
| private static final Set<MediaType> SUPPORTED_TYPES = Collections.unmodifiableSet( |
| new HashSet<>(Arrays.asList(MediaType.application("vnd.ms-excel.sheet.4"), |
| MediaType.application("vnd.ms-excel.workspace.4"), |
| MediaType.application("vnd.ms-excel.sheet.3"), |
| MediaType.application("vnd.ms-excel.workspace.3"), |
| MediaType.application("vnd.ms-excel.sheet.2")))); |
| |
| protected static void parse(OldExcelExtractor extractor, XHTMLContentHandler xhtml) |
| throws TikaException, IOException, SAXException { |
| // Get the whole text, as a single string |
| String text = extractor.getText(); |
| // Split and output |
| String line; |
| BufferedReader reader = new BufferedReader(new StringReader(text)); |
| while ((line = reader.readLine()) != null) { |
| xhtml.startElement("p"); |
| xhtml.characters(line); |
| xhtml.endElement("p"); |
| } |
| } |
| |
| public Set<MediaType> getSupportedTypes(ParseContext context) { |
| return SUPPORTED_TYPES; |
| } |
| |
| /** |
| * Extracts properties and text from an MS Document input stream |
| */ |
| public void parse(InputStream stream, ContentHandler handler, Metadata metadata, |
| ParseContext context) throws IOException, SAXException, TikaException { |
| // Open the POI provided extractor |
| OldExcelExtractor extractor = new OldExcelExtractor(stream); |
| |
| // We can't do anything about metadata, as these old formats |
| // didn't have any stored with them |
| |
| // Set the content type |
| // TODO Get the version and type, to set as the Content Type |
| |
| // Have the text extracted and given to our Content Handler |
| XHTMLContentHandler xhtml = new XHTMLContentHandler(handler, metadata); |
| xhtml.startDocument(); |
| parse(extractor, xhtml); |
| xhtml.endDocument(); |
| } |
| } |